Chapter 12.1, Problem 22E

(a)

To determine

To calculate: The value of $y_0,y_1,y_2,y_3\text{ and }{y}_4$ for difference equation $y_n=y_{n-1}-2$.

(b)

To determine

To graph: The points $\left(0,10\right),\left(\text{1,8}\right)\text{, }\left(\text{2,6}\right)\text{,}\left(3,4\right),\left(4,2\right)$.

(c)

To determine

Why formula 3 cannot be used to obtain the solution of equation $y_n=y_{n-1}-2$.